She added that children were playing on nearby field and had the chisel "gone the other direction, it could have killed a child."

Carol Tweedy, former executive director of Asphalt Green, the company in charge of the construction, said officials had documented “"many safety issues" and "unsafe conditions" tied to the construction.

"Of course an accident is going to happen. This is not the site for an industrial facility," she said.

A representative from the city’s Department of Design and Construction, which is overseeing the work, said an investigation is underway but "the important thing is that the lady is doing well".